Escitalopram-Associated Flushing

Mechanism and Clinical Evidence

Flushing occurs due to temporary vasodilation of blood vessels near the skin surface, which can be triggered by various medications, including selective serotonin reuptake inhibitors (SSRIs) like escitalopram 1
The serotonergic effects of escitalopram may contribute to peripheral vasodilation in susceptible individuals, similar to what is observed with other medications that affect neurotransmitter systems 1
Flushing episodes can mimic anaphylactic events and should be distinguished from more serious reactions, according to the American Academy of Allergy, Asthma, and Immunology 1, 2
Several drugs and substances can induce flushing, including SSRIs like escitalopram, though they are not among the most common causes 1

Prostacyclins (epoprostenol, treprostinil, iloprost) are known to cause flushing, as reported by the American Heart Association 3, 4, 5
Niacin can cause flushing, as noted by the American Diabetes Association 6
Calcium channel blockers and nitrates can also cause flushing, according to the European Society of Cardiology 7

If a patient experiences flushing with escitalopram, assess the severity and impact on quality of life, and rule out other causes of flushing, as recommended by the American Academy of Allergy, Asthma, and Immunology 1, 2
Patients with pre-existing vasomotor instability or those taking other medications that can cause flushing may be more susceptible, as reported by the European Society of Cardiology 1, 7
Elderly patients may be more sensitive to vasodilatory effects of medications, according to the European Society of Cardiology 7

When evaluating flushing in a patient taking escitalopram, consider other potential causes, including other medications, carcinoid syndrome, pheochromocytoma, menopausal vasomotor symptoms, alcohol-induced flushing, and emotional reactions, as recommended by the American Academy of Allergy, Asthma, and Immunology 1, 2